Am 11.07.19 um 23:34 schrieb Sean DiZazzo:
Klein and Crossbar.io seem relevant as well
https://crossbario.com/blog/Going-Asynchronous-from-Flask-to-Twisted-Klein/
yeah, klein is neat!
fwiw, this might also be of interest, as it allows to scale-up twisted
web (and hence also klein) on multi-core (on linux)
https://github.com/crossbario/crossbar-examples/tree/master/benchmark/web
combining SO_REUSEPORT with Klein results in a concurrent, async
(threadless) server parallelized via processes ..
On Thu, Jul 11, 2019 at 1:46 AM Scott, Barry <[email protected]
<mailto:[email protected]>> wrote:
On Tuesday, 9 July 2019 22:04:11 BST Tom Most wrote:
...snip...
> The reactor's own thread pool is really for DNS
> resolution.
Is that still true in the default case? We are use the twisted code
that talks
to DNS servers as the threaded resolver adds too much latency.
> You risk deadlocks in a system that
> ThreadPoolThreadPoolThreadPool
>
> 3. The specifics of what long_computation are also important. If
it doesn't
> release the GIL you won't get real parallelism (this is a Python
thing, not
> a Twisted thing). See this recent thread on the topic
>
<https://twistedmatrix.com/pipermail/twisted-python/2019-June/032371.html>.
We pass out the computational work to other processes over
unix-domain-sockets
to avoid the GIL issues.
>
> Though the mechanisms differ athis thread on the topicny of the
above would
> cause the response time to increase as you add load.
>
> Good luck,
> Tom
Barry
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